Electrical ignition device.



` G. HONOLD. ELECTRICAL IGNITION DEVICE.

APPLICATION FILED MAR. 2|. 1908.

MTN E5 5 E5 G. HONOLD.

ELECTRICAL IGNITION DEVICE.

APPLICATION FILED MAR. 2I. laos.

1,165,601 Patented Dec. 28, 1915.

3 SHEETS-SHEET 3.

GOTTLOB HONOLD, OF STUTTGART, GERM ELECTRICAL IGNITION DEVICE.

.To ZZ whom t may concern.'

Be it known that gineer, a subject of the German Emperor, residing at ll Hoppenstrasse, Stuttgart, Germany, have invented certain new and useful Improvements in Electrical Ignition Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains. to make and use the same.

This invention relates to apparatus Jfor applying the method ot starting multi-cylinder internal combustion engines wherein a battery and coil ignition is used, described in U. S. Iatent No. 1,003,743 of September 19, 1911.

In startingfr multi-cylinder internal combustion engines which after an interruption are set in motion again merely by igniting the charge in one of the cylinders there exist two'cylinders wherein at this moment there is a compression equal to halt the normal compression` and the cylinder in which ignition ought to occur is that one the ignition y plug of which is put into circuit by the distributer. rEhe common experience is, however, that the spark produced by the battery and the coil does not suffice to ignite a mixture the compression of which is low, unless theV sparks follow each ,other repeatedly and rapidly, whereas a single spark suffices to ignite the mixture when the motor has once been started. It is therefore necessary, in starting the engine, to use a trembler such as is commonly employed when the ignition is by means of a battery er accumulator; whereas as soon as'the engine is started the trembler may be dispensed with.

T he present invention relates to the startin?,` ot multi-cylinder internal combustion engines by means of an ignition apparatus supplied with current from a battery or accumulator in which singgle sparks sullice for the ignition, 'and consists essentially in effecting the ignition in the first instance with aid ot' a trembler in known manner, and then effecting the ignitionlby single sparks when the engine has been started, the trembler being no longer in action.

This method, compared with those commonly used for starting the engine, in which the trembler .is in action while the engine is running, presents the advantage that since single sparks are used during the Specification of ALetters Patent.

I, Go'rTLo HoNoLD, en:

900 relatively to .fippnction mea March 21, s. semi no. lisant?.

running, the demand on the batt siderably les* and 'the electrodes of: 4. tion plug are less used. Yftl'oreover,all defects of the trembler which nn'favorably affect the quality et the ition spark, de not come into play during,- running. so that the disad f'antagg'e inherent t" e er, namely that i is requiifs a' certain interval of time before it vibrating, which delay may retard the speeds to an extent close ir 25 and gives te irreiew avoided. i

The object of the Apreseiw assemble all the part." coi" push-button and the o i switch terminals inoun` 'which incloses the other In the accompanying er' is an elevation ot the ass i the casing being shown in section; an elevation of the coil removedL from casing; Fig. 3 is an underside elan et the paratus 'showing Athe elet il conn cti in a diagrammatic manner; underside plan off the switch plate, die 3, and showi electrical connections Yin dief manner; 5 is section on l Fig. (3; Fig. 6 is a seetiono of Fig. 5; Fig. 6; Fig. 8 is a through the treni diagrammatic secf enal cleiatieUAV whole trembler; 'l0 a plan trembler spring; 'l Is e verticai through the push l t i tion, Fig. l* is an ele in section, the button Figs. 13 and lll-.are p respectively; i. n enlarged scaler The casing' nularly dispose jects a handle e er. frame within the ries the vibra plate. This i A the plate into tions, though i n to arrange for 'tui the switch terminals, lez stationary. i

all the connections inay oe made by perme- Agramn'iatically. `incasedn a helical spring d which presses the nent assembling)` devices which need not be taken apart einen for inspection and removal of the coil. and eren for this the connecting leads need not disarranged.

l he battery ll and the ignition current generator 218./ shown in 3. are connected by suitable leads or conductors with the contact spring' c. the condenser i, the coil and the switch (consistingn ont the switch plate c and the terminal plate ZJ) so as to torni 'the several circuits set. forth in the aforesaid patent. n

rlo permit compactness il give the iron core of theqinduction coil. 2 @cial :term which is illustrated in -litige. 59 @d and '.7. The characteristic 'feature oit this iiorrn is that the core, constructed as usual nated iron has the .term ot a shutt ture. ln the drawing a is the co the brackets for tiring it,and c sin segments mounted on the pole pi c serving to improve the closing oit man; netic circuit. A

'l and ,ll are the two 'Windirigs rthe preferred form of trembler or Vibrator is shown in lligs. 8, 9 and l0, ini-Jl*l 9 and l0 ot which the magnet is shown dialn a piece of metal fm is contact spring e against the adjusting screw f. lll he latter controls the height oit the contact spring, so that by adjusting it the most favorable `position ot'the spring' relatiwelyV to the magnet core and contact screw g is y attained. Above the piece m and the contact spring e is iixed a casting 7c separated romjthe spring by an insulatingpiece Z. lin this casting is screwed the contact screw g having a platinum contact at its end to hear against the platinum i on the contact springe.

lhe metal block m supports the con.- denser Y, and is secured td but insulated from one of the arms orlorackets b to the lower ends ot. which the switch plate a, is secured, and to the centralA portion ot which the coil 2, is secured, the several elements being thus brought compactly together in a single structure which is rotatably supported within the casing A and manipulated by means ot the handle c. The ad- 4vantage of this trembler as compared with known vibrators resides in the tact that its manufacture is exceedingly simple and cheap and that the tension and position of the contact spring e may be easily adjusted by .turning the screw 'll`he` switch7 composed of the movable switch plate a, and the stationary terminal plate is adapted to cut out the ignition entirely, or to lering the magneto alone, or the battery alone., into circuitl as desired, these adjustments being accomplished by shitting the handle c into the various positions indicated in lig., 3. As shown in lig.

ondary Windi 'current generaron 1.53, also to the stationary contact of the mechanical magneto coil 2. The stationary' contact plate Z9 is provided y. h the contacts 232, b3, t4, b5 and h6. The contact t is connected to one terminal ot the battery ll and to the stationary contact et the mechanical battery interrupter l2; the contact b2 is connected to the junction between the 'primary and sec s oft the magneto or ignition interrupter le; the contact h3 is connected. to tie outer end the secondary winding oit me 1 nition current generator 13; the contact o is connected to the rotating hrush ofthe distrihuter l5; and the contact t is ed to the other terminal ozt the bat- .l llifhen is desired to start the ignition, the handle c is placed in thestarting position shown in Fig. 3 in the bottom nosition indicated by broken lines and the push button 5 `is depressed until its contact terminal engages the contact 'terminal g er" the arm Ic to 'thereby ground the contact snring,` e on the casing A. The current then flows trom the battery l1 through the contacts t, a. to the'contact snring e, and

through the contacts i, 7L and g, n to the' casina A. 'inasmuch as the primary winding lis grounded on the casing'. the current flows throusfh this Windingn and hack to the other terminal ci the battery through vthe contacts a5; Z55. ln flowing through the nrimary Winding; ll., a hieh tension ignition current 'is produced in the secondary Wind-v ma lill at each mterruntion. and the ignr tion current is conducted through the contactsf. h4 to the distrihute'r l5 and the lsnark plugs oit the engine. When the ennine has been started. the Vibrator is cut out' ot the circuit by releasing the button 5. and the ignition then 'proceeds in the usual mannen., the battery current HoWinQ'. during' the period oit ignition, by Wav ot1` the engae'ed contacts of the mechanical interrupter l2 to the grounded end of the pri mary Winding` ll', instead of through the contacts 52 a.

vlily movina'the handle c to the intermediate position shown in full lines in `Fig. 3, the battery l1 and the vibrator c (shown with its electrical connections in Fig. 4) are cut out of circuit, and the ignition current generator 13 is cut into circuit by reason of the tact that the contact a3 then connects the contacts b3 and Lt to' connect the secvtuidary -winding ot the ignition current generator 13 to the distributor 15.

'ln order to cut 'out both ignition systems, handle c is moved to the uppermost position shown in broken lines in Fig. 3,

tion so as to utilize tor ignition a series of sparks instead of one alone. ln this case the control still through the usual interrupter which is operated by the engine and which suspends the action ot' the trembler as soon as the contacts ot the ii'iterrupter come together.

@ne part ot this invention relates to a construction of the button 5 which allows o'lI itsl being` brought into position tor makinf;v its contact either momentarily or tor any length ot' time as may be desired. For this purpose. the button isI constructed to be turned as well as to be moved axially; when thus `turned it is kept in the position in which it closes the contact. T his construction is shown in Figs. 1l to ll. rEhe rod 'n is urged upward by spring o in such man-- ner that collar y) on the rod abuts against the inner surface ot the top ot' the cap q, torined or secui'ed on the casing and through a perforation in which the rod extends. '.lo the top ot the rod n is tixed acap fr adapted to be retained in its depressed position by a bayonet slot a engaging a radial pin or lug;` on the cap g, as shown in Fig. l2.

f1 is advantageous that the button or rod n should itself t'oriu a part ot the conducting' mass oit 'the apparatus, for in lthis manner complicated arrangements for insulating the button are avoided, and the latter. which is exposed to the air, may be made ol metal.

To connect the button with the mass o'l the engine, the whole casing may advantageously be made ot metal, thefmost convenient form being` that ol2 a hollow cylinder, as shown in lfin. l. At the same time this arrangement secures high durability and resistance to external influences, aswell as economy ot space.

Having thus fully described my invention, what l claim is:

l. ln an ignition apparatus, the combination.y with a casing. an induction coil rotatable therein, a trembler springy carried by' said induction coil and in electrical communication with the primary ot said coil, and means extending outside the casing` lor roarranged toA contact with said trembler spring' to close an electric circuit therethrough, and means extending outside the casing for rotating said induction coil and spring.

in an ignition apparatus, the combination, with a casing, an induction coil rotatable therein, a trembler sprino, a condenser and a movable switch-platel carried by said induction coil. said switch-plate having a plurality ot' independent cont-acts, leads electrically connecting the coil, the condenser and the trembler spring to the respective contacts ot' the switch-plate, and means extending` outside the casing for rotating the induction coil and its connected parts, ot a stationary switch-plate in fixed relation to the c: singsaid stationary switchplate having contacts arranged to engage the respective contacts ot the movable switch-plate and having conductor terminais and a push-button device carried by the casing,- and arranged to close an electricalV circuit through the trembler spring'.

el. ln an ignition apparatus tor multicylinder internal combustion engines, the combination., with a casing, an induction coil rotatable therein, a tren 'er spring, a condenser, and a movable switch-plate carried by said induction coil, said switch-plate having.` a phirality of independent contacts, leads electrically connecting,-` the coil, the condenser and the trembler spring' to the respectirle contacts oi'E the .".vitch-pla'te,.and means extending' outside the casing tor rotating; the induction coil and connected paris. ot a stationary switch-plate in ixed relation to the casing', said stationary switch-plate having` contacts arranged to engage the respective contacts ot the movable swi'tch-plate and having conductor terminals. a push button device carried by the casing' and arranged to close an electric circuit through the trembler sprine, and means Jfor ,locking said push button in its closing position.

5. In an ignition apparatus, the combinatioiuwith an induction coil comprising a core and a winding' having one end grounded on its core. a movable switch-plate in fixed relation with -the induction coil and having a plurality ot separate contacts, a condenser and a trembler spring in ixed relation to said induction coil, lead connect trembler spring and one terminal f condensei to one' of the said contacts movable swi;ch-plateleads connec points of the winding oit' the indnct to two seiarate contacts oi said movable switch-lala metallic in which the condenser. tienibler spring switcl e aie .otatably outside the .induction coil and ieans grounding i condenser on said erated ineans spying o 'a Jclfnplate in :lined totl'ae casing and provided with s aiiano'ed to the resgective contacts ot the movable switch-plate, the contacts ot said stationary switcli plate hav.- 'ing cable terminals, substantially as descifibed,

'16. andan iontion apparatus toi inteinal combustion engines, combination, with a casing, an induction coil in said casing, a tieinble arranged to `be actuated by the induction coil, an adjusting screw and a helical s5 sing. arranged to press said trein-- bien gg against the said adjusting" sci/ew, and yield' ig; nieans carried by the casing aitanged to close an electrical circuit through the ti'einblei" spring.

Y. ln an ignition apparatus for internal lcombustion engines, the combination, with an induction coil compising a shnttle-ain1a ture shaped core and 'windings thereon, one terminal of said windings being grounded on said coi'e, a trembler spying; arranged be actuated by the induction coil, naeans for electrically connecting one end of said trenibler spring with the windings'ot the induction coil, and ineans toi' making an inten ruptable electrical connection between the tzcernblei spring and the core ol the incluetion coil. y

8. lin an ignition apparatus torinteici'ial combustion engines, the combination, with. a cylindrical metallic casing, an induction coil having,` a shuttle-armature shaped core and windings thereon, one terminal of said windingsl being grounded on the coife, said coil beingrotatable in said easing` and havcontact in@n its cote in electrical communication with the casing, a trembler spring, .condenser and a movable switch-plate carried by said induction coil, said movable switch-plate having a -nl'inality of contacts, leads con' nectinggl one terminal oi the condenser and the trembler spring to one oi the contactf'sI tinol makin a contact between the treme Y i spring and the casing, and means outside the casing for ifotating the induction coil and its attached pants, wheceby one contact ol the movable plate is moved out ot engagement with the corresponding contacts of the stationaiy plate.l

9. ln an ignition' apparatus, for internal combustion engines, the combination, with a cylindrical casing, an induction coil rotatable therein, a trembler and a movable switcli-plate carried by said induction coil and in iixed relation thereto, and means extending' outside the casing and arranged to rotate said coil and its attached parts, of means Yfor' connecting the trembler and the windings of the induction coil to contacts of the movable switch-plate in parallel relation, and a stationary contact plate in fixed relation to the casing and provided with contacts arranged to engage the corresponding contacts of the movable switchplate, said stationary plate having cable terminals in connection with its said contacts.

ln testimony whereof l have hereunto afxed my signature in the piesence of two witnesses.

GOTTLB HNOL'D. lifitnesses lniNi-IOLD linwnni, lnnsa lim/inn, 

